The 10 deadliest tornadoes to have hit the United States are listed below: 10. That said, some are far more powerful and destructive than others. A tornado watch is issued when weather conditions are favorable for a tornado while a tornado warning is issued when spotters have sighted at least one tornado or seen indications of one on radar. Tornadoes can occur in any season and at any time, which is why it is important to follow local weather advisories. Places where green and red intersect suggest the possibility of a tornado, or at least the precursors to one forming. Winds blowing towards the radar appear green while those blowing away from the radar appear red. Spotters can see the possibility of a tornado irrespective of what kind of storm it is through radar velocity data, which offers important information about the direction of winds. Tornadoes can form wherever there are strong, rising motions of air. Storm spotters look for certain signatures on radar imagery to determine whether or not tornadoes are likely to be present. If the conditions are right, the air will begin to rotate as it rises, at which point the storm clouds form into a funnel cloud or a tornado. Such whirlwinds tend to form in areas where the air is rising at a quick pace. Tornadoes typically occur on warm, humid days, when strong thunderstorms are already present in the atmosphere. With as many as 1,200 tornadoes occurring in the country each year, America’s knowledge of such storms may have improved significantly, but a lot of research still needs conducting in regards to what exactly causes these destructive, spiraling torrents of wind. The 10 deadliest tornadoes to have hit the United States so far are discussed herein. The United States has witnessed more tornadoes than any other place in the world. The Most Devastating Tornados By Fatalities The massive tornado of 2011 in Joplin, Missouri claimed 161 lives, becoming the first tornado in US history to claim over 100 lives since 1953.
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